export function getMousePos(event) {
       var e = event || window.event;
       var scrollX = document.documentElement.scrollLeft || document.body.scrollLeft;
       var scrollY = document.documentElement.scrollTop || document.body.scrollTop;
       var x = e.pageX || e.clientX + scrollX;
       var y = e.pageY || e.clientY + scrollY;
       //alert('x: ' + x + '\ny: ' + y);
       return { 'x': x, 'y': y };
}